Drug interactions
Carbidopa-levodopa + Sumatriptan intranasal
Severity: Minor
Carbidopa-levodopa and Sumatriptan intranasal: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Both drugs are listed as affecting serotonergic pathways, but there is no well-established clinically significant interaction. Levodopa is not a recognized cause of serotonin syndrome with triptans, and the theoretical risk is low.
What this interaction means in plain words
Carbidopa-levodopa and Sumatriptan intranasal have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Theoretical additive serotonergic effect; no established mechanism.
What to do
No dose change is required. Educate the patient to report agitation, tremor, sweating or fever after dosing.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Carbidopa-levodopa
- Carbidopa-levodopa + Isocarboxazid Contraindicated
- Carbidopa-levodopa + Phenelzine Contraindicated
- Carbidopa-levodopa + Selegiline transdermal Contraindicated
- Carbidopa-levodopa + Tranylcypromine Contraindicated
- Amisulpride + Carbidopa-levodopa Major
- Asenapine + Carbidopa-levodopa Major
Frequently asked questions
Can I take Carbidopa-levodopa with Sumatriptan intranasal?
MediHelp rates the interaction as minor. Carbidopa-levodopa and Sumatriptan intranasal have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Both drugs are listed as affecting serotonergic pathways, but there is no well-established clinically significant interaction. Levodopa is not a recognized cause of serotonin syndrome with triptans, and the theoretical risk is low.
How serious is the interaction between Carbidopa-levodopa and Sumatriptan intranasal?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose change is required. Educate the patient to report agitation, tremor, sweating or fever after dosing.
What other medicines interact with Carbidopa-levodopa?
MediHelp also lists interactions of Carbidopa-levodopa with, for example, Isocarboxazid, Phenelzine, Selegiline transdermal. The full list is on the Carbidopa-levodopa page.
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